#1A178E#1A178E

#1A178E is a dark, vivid blue. Relative luminance 0.028; OKLCH L 32.2% C 0.183 H 270.7°. Best body text is #FFFFFF at 13.49:1 contrast (WCAG AA passes).

Color values

HEX	#1A178E
RGB	rgb(26, 23, 142)
HSL	hsl(242, 72%, 32%)
HSV	hsv(242, 84%, 56%)
CMYK	cmyk(81.7%, 83.8%, 0%, 44.3%)
CIE-LAB	lab(19.16, 43.16, -63.18)
CIE-LCH	lch(19.16, 76.52, 304.34°)
OKLab	oklab(32.2% 0.0023 -0.1829)
OKLCH	oklch(32.2% 0.183 270.7)
XYZ	xyz(5.6132, 2.7848, 25.8276)
Luminance	0.0278 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A178E #8B8E17

analogous

#174F8E #1A178E #56178E

triadic

#1A178E #8E1A17 #178E1A

tetradic

#1A178E #8E174F #8B8E17 #178E56

square

#1A178E #8E174F #8B8E17 #178E56

split-complementary

#1A178E #8E5617 #4F8E17

monochromatic

#070625 #100E59 #1A178E #2420C3 #433FE0

Accessibility & contrast

On white

13.49

#1A178E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#1A178E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A178E

13.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A178E	#FFFFFF	#000000	##FFFFFF
##1A178E	1.00	13.49	1.56	13.49
#FFFFFF	13.49	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003491

Deuteranopia (green-blind)

#00288C

Tritanopia (blue-blind)

#003D54

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1a178e;
/* rgb */ color: rgb(26, 23, 142);
/* oklch */ color: oklch(32.2% 0.183 270.7);

Tailwind

colors: {
  custom: {
    50: '#6f58b0',
    500: '#1a178e',
    950: '#000000',
  },
}

SCSS

$custom: #1a178e;
$custom-light: #6f58b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1a178e",
  "rgb": {
    "r": 26,
    "g": 23,
    "b": 142
  },
  "hsl": {
    "h": 241.513,
    "s": 72.121,
    "l": 32.353
  },
  "oklch": {
    "l": 0.322,
    "c": 0.1829,
    "h": 270.7
  },
  "luminance": 0.02785
}

Semantic roles & 50–950 ramp

primary

#1A178E

secondary

#BDC040

accent

#EF39EA

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090311

muted

#7B7880

Preview Lab

Preview with #1A178E

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →